The only way you can make the above work is by cutting Hebrews 8:6, and Hebrews 7:12, and Hebrews 10:16-18, and Hebrews 12:22-24, and 2 Corinthians 3:6-8 out of your Bible.
Those are New Covenant verses written in the present tense, during the first century.
Heb 8:6 But
now hath he obtained a more excellent ministry, by how much also
he is the mediator of a better covenant, which was established upon better promises.
In the two passages below we find the New Covenant specifically applied to the Church.
Heb 12:22
But ye are come unto mount Sion, and unto the city of the living God, the heavenly Jerusalem, and to an innumerable company of angels,
Heb 12:23
To the general assembly and church of the firstborn, which are written in heaven, and to God the Judge of all, and to the spirits of just men made perfect,
Heb 12:24
And to Jesus the mediator of the new covenant, and to the blood of sprinkling, that speaketh better things than that of Abel.
2Co 3:6
who also made us sufficient as ministers of the new covenant, not of the letter but of the Spirit;
for the letter kills, but the Spirit gives life.
2Co 3:7 But if
the ministry of death, written and engraved on stones, was glorious, so that the children of Israel could not look steadily at the face of Moses because of the glory of his countenance, which glory was passing away,
2Co 3:8
how will the ministry of the Spirit not be more glorious?
(It is the ministry of the Spirit that writes the law of God on your heart. Have you been "born again" of the Spirit, as described in John 3? If there has been no change in the sin in your life, you need to re-examine how the Spirit of God is working in your heart.)
...............................................................
At the Last Supper Christ revealed that He would fulfill the New Covenant, with His blood.
Jer_31:31 "Behold, the days are coming, says the LORD, when I will make a new covenant with the house of Israel and with the house of Judah—
Mat_26:28
For this is My blood of the new covenant, which is shed for many for the remission of sins.
Mar_14:24 And He said to them, "
This is My blood of the new covenant, which is shed for many.
Luk_22:20 Likewise He also took the cup after supper, saying, "
This cup is the new covenant in My blood, which is shed for you.
1Co_11:25 In the same manner He also took the cup after supper, saying, "
This cup is the new covenant in My blood. This do, as often as you drink it, in remembrance of Me."
2Co_3:6 who also made us sufficient as ministers of the new covenant, not of the letter but of the Spirit; for the letter kills, but the Spirit gives life.
Heb_8:8 Because finding fault with them, He says: "BEHOLD, THE DAYS ARE COMING, SAYS THE LORD, WHEN I WILL MAKE A NEW COVENANT WITH THE HOUSE OF ISRAEL AND WITH THE HOUSE OF JUDAH—
Heb_8:13 In that He says, "A NEW COVENANT," He has made the first obsolete. Now what is becoming obsolete and growing old is ready to vanish away.
Heb_9:15 And for this reason He is the Mediator of the new covenant, by means of death, for the redemption of the transgressions under the first covenant, that those who are called may receive the promise of the eternal inheritance.
Heb_12:24 to Jesus the Mediator of the new covenant, and to the blood of sprinkling that speaks better things than that of Abel.
.